Improvement in lubricators



1. s. wlcluznslmm..u

Luh.rcators.

Partented Jan. 2o. 1874.

UNITED 'STATES JOHN B. WIGKERSHAM, QF PHILADELPHIA, PENNSYLVANIA.

|MPR`vEMl-:NT IN LuBRlcAToRs.

Specii cation forming part of Letters Patent N0. 146,734, dated January20, 1874 application filed November 25, 1873.

' into which is secured a globular, or nearly globular, oil-reservoir,with an opening at the bottom or at both ends. The metallic shell isprovided with openings in the lower part of the side, so as easily toobserve the condition ofthe oil. Within the reservoir is a tube passingthrough the bottom of the shell, and firmly secured thereto, and a valvewith screw-stem is applied to this tube, and a graduated head andholding-finger may be employed in addition, so that the quantity of oilpassing to the part to be lubricated is accurately regulated. Ascrew-cap closes the neck of the metallic Shell.

In the drawing, Figure 1 is a vertical section of the lubricator,complete; and Fig. 2 is an end view of the valve-spindle and index.

The metallic case a is made with a screw, 2, at one end, for attachingthe lubricator to the part where lubrication is required. The case a isof a size to receive the glass reservoir b, that is globular, or nearlyso, in its general shape, and at the upper and lower portions openingsor necks 3 and 4 are provided. The neck 4 passes into the recess at thebottom of the case a, and it is there secured by plaster, or a washer,or any suitable packing. The

sides of the case a are open, as at 5, so as to allow the glassreservoir b to be observed, especially at the lower portion thereof,where deficiency of oil or accumulation of sediment should be noticed.The cap f to the case c is to be screwed into the upper end of the easee. It has a neck, 6, into which the upper end, 3, of the reservoirpasses, and into which it is secured by cement, a washer, or suitablepacking. The oil-tube h is made witha screw, at 8, to secure it withinthe opening through the bottom end, 2, of the metal case a, and at thelower'end such tube h is secured additionally bybeing spread or rivetedup within the countersunk end of the screw 2, as shown. The

l tube h is extended upwardly, and openings or inlets are providedtherein. There may be two or more above the seat o, and within thisextension of the tube h is the valvesteln r,

with a conical point or valve at its lower end. The stem 1^ is made witha fine-threaded screw, entering the upper end of the tube h, or pass ingthrough a standard, forming a support for said stem, anda head, s, tothe said spindle serves to adjust the same and the valve with greataccuracy, so as to allow only the required quantity of oil to passthrough the valve-seat, or to shut off the escape of oil entirely. Thespring or a finger, t, bearing againstthe side of the head s, preventsthe screw-spindle and valve being'shaken out of place by any vibrationto which they are subjected; and, to facilitate adjustment, the sides ofthe said head are uted and numbers placed upon the head, (see Fig. 2,)so that the valve can be opened to a given position after having beenclosed.

ln order to prevent the oil spilling, especially with loose pulleys, ascrew-stopper, u, is provided to the neck 6 of the cap f, and this stoprper u is hollow, so as to receive the projecting end of the spindle.

This lubricator is very strong. protected from concussion; the oil isvisible,l

and the quantity employed for lubrication may be adjusted with thegreatestaccuracy, or the 2. The iiuted head s to the valve-spindle r,`

in combination with the spring-finger t, at-

tached to the upper end of the tube h, as and y for the purposes setforth.

Signed by me this 21st day of November,

JOHN B. WIGKERSHAM.

Vitnesses NORMAN H. STEVENS, J As. MCCARTNEY.

The glass is

